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Jun 30, 2018
06/18
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Kevin De Laet
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This paper has two goals: to prove certain properties of character series of graded algebras on which a finite group acts as algebra automorphisms and to provide a detailed analysis of representations of 5-dimensional Sklyanin algebras at points of order 2. We also prove that for any odd prime p, the p-dimensional Sklyanin algebras associated to points of order 2 are graded Clifford algebras.
Topics: Mathematics, Quantum Algebra, Representation Theory
Source: http://arxiv.org/abs/1412.7001
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Oct 26, 2014
10/14
by
Laet, Joannes de
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2°. [32], 544, 31, [11] p
Topics: Kort verhael wt de voorgaende boecken ghetrocken, vande diensten ende nuttigheden die desen staet...
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Oct 29, 2014
10/14
by
Laet, Joannes de
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24°. 374, [10] p
Topic: Geografie Iran
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Oct 25, 2014
10/14
by
Laet, Joannes de
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eye 236
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2°. [32], 544, 31, [11] p
Topics: Kort verhael wt de voorgaende boecken ghetrocken, vande diensten ende nuttigheden die desen staet...
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223
Dec 1, 2014
12/14
by
Johannes : de Laet
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eye 223
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Topic: bub_upload
Source: http://books.google.com/books?id=iGsleOYTx7sC&hl=&source=gbs_api
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Jun 30, 2018
06/18
by
Kevin De Laet
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In this article we study graded Clifford algebras with a gradation preserving action of automorphisms given by $H_p$, the Heisenberg group of order $p^3$ with $p$ prime. After reviewing results in dimensions 3 and 4, we will determine the graded Clifford algebras that are AS-regular algebras of global dimension 5 and generalize certain results to arbitrary dimension $p$. More specifically, we prove that there is a nice correspondence between $\mathbb{P}^1_{\mathbb{F}_p}$ and the algebras...
Topics: Mathematics, Rings and Algebras
Source: http://arxiv.org/abs/1401.7800
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Oct 27, 2014
10/14
by
Laet, Joannes de
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2in-4.
Topic: Geography History (Netherlands) Nederland
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142
Aug 3, 2016
08/16
by
Johannes : de Laet
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Topic: bub_upload
Source: http://books.google.com/books?id=LZTx0RjTNikC&hl=&source=gbs_api
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Oct 29, 2014
10/14
by
Laet, Joannes de
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eye 348
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2°. [28], 622, [18] p
Topics: Nieuvve wereldt ofte Beschrijvinghe van West-Indien, Caribisch gebied
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Oct 28, 2014
10/14
by
Laet, Joannes de
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Oct 27, 2014
10/14
by
Laet, Joannes de
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eye 212
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2in-4.
Topic: Geography History (Spain, Portugal)
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Oct 27, 2014
10/14
by
Laet, Joannes de
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2°. 12 p. l., 510, [16] p
Topic: Nieuvve wereldt Nieuwe wereldt ofte Beschrijvinghe van West-Indien
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Jan 23, 2017
01/17
by
Laet, Sigfried J. De
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Book Source: Digital Library of India Item 2015.537384 dc.contributor.author: Laet, Sigfried J. De dc.date.accessioned: 2015-10-08T14:18:31Z dc.date.available: 2015-10-08T14:18:31Z dc.date.digitalpublicationdate: 3/31/2010 dc.date.citation: 1948 dc.identifier.barcode: 99999990074963 dc.identifier.origpath: /data10/data51/upload/0018/886 dc.identifier.copyno: 1 dc.identifier.uri: http://www.new.dli.ernet.in/handle/2015/537384 dc.description.scanningcentre: IGNCA, Delhi dc.description.main: 1...
Topic: IGNCA
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Jun 29, 2018
06/18
by
Kevin De Laet
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The singularities of the representation variety of $B_3$ are studied, where $B_3$ is the knot group on 3 strands. Specifically, we determine which semisimple representations are smooth points of this variety.
Topics: Representation Theory, Algebraic Geometry, Group Theory, Mathematics
Source: http://arxiv.org/abs/1605.09556
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Sep 10, 2010
09/10
by
Laet, Sigfried J. de
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Bibliography: p. 179-182
Topic: Historia Antiga
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Jul 27, 2016
07/16
by
Johannes : de Laet
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eye 250
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Topic: bub_upload
Source: http://books.google.com/books?id=HfTnrRkumcgC&hl=&source=gbs_api
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Jul 29, 2016
07/16
by
Johannes : de Laet
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eye 242
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Topic: bub_upload
Source: http://books.google.com/books?id=iv3XCvbmh_QC&hl=&source=gbs_api
Laet, Johannes : de. Hispania, sive de Regis Hispaniae regnis et opibus commentarius. Lugd. Batav: Ex Officina Elzeviriana, 1629 Scanned by Claudio Ruggeri, Opal Libri antichi , University of Turin
Topics: European history, 17th century
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351
Oct 27, 2014
10/14
by
Laet, Joannes de
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24°. 520, [6] p
Topic: Hispania
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Jun 29, 2018
06/18
by
Kevin De Laet
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In this article, a new proof is given of the description of the center of quadratic Sklyanin algebras of global dimension three and four and the center of cubic Sklyanin algebras of global dimension three. The representation theory of the Heisenberg groups $H_2$, $H_3$ and $H_4$ will play an important role. In addition a new proof is given of Van den Bergh's result regarding noncommutative quadrics.
Topics: Rings and Algebras, Mathematics
Source: http://arxiv.org/abs/1612.06158
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Jun 30, 2018
06/18
by
Kevin De Laet
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The quantum plane $A=\mathbb{C}_\rho[x,y,z]$ with $\rho$ a root of unity has singularities in its representation variety $\mathbf{trep}_nA$ and its center $Z(A)$. Using the technique of a noncommutative blow-up, we prove that this technique fails in contrast to the 3-dimensional Sklyanin algebras if we want to resolve the singularities in the representation variety. However, we will see that the singularity of the center in the origin can be made better using this technique.
Topics: Mathematics, Representation Theory
Source: http://arxiv.org/abs/1405.1938
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0.0
Jun 29, 2018
06/18
by
Kevin De Laet
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In this article we define $G$-algebras, that is, graded algebras on which a reductive group $G$ acts as gradation preserving automorphisms. Starting from a finite dimensional $G$-module $V$ and the polynomial ring $\mathbb{C}[V]$, it is shown how one constructs a sequence of projective varieties $\mathbf{V}_k$ such that each point of $\mathbf{V}_k$ corresponds to a graded algebra with the same decomposition up to degree $k$ as a $G$-module. After some general theory, we apply this to the case...
Topics: Rings and Algebras, Mathematics
Source: http://arxiv.org/abs/1605.09265
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Jun 28, 2018
06/18
by
Kevin De Laet
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In this paper it is shown how the Heisenberg group of order 27 can be used to construct quotients of degenerate Sklyanin algebras. These quotients have properties similar to the classical Sklyanin case in the sense that they have the same Hilbert series, the same character series and a central element of degree 3. Regarding the central element of a 3-dimensional Sklyanin algebra, a better way to view this using Heisenberg-invariants is shown.
Topics: Mathematics, Rings and Algebras
Source: http://arxiv.org/abs/1510.04024
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Jul 23, 2016
07/16
by
Johannes : de Laet
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eye 183
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Topic: bub_upload
Source: http://books.google.com/books?id=fhxouEP0uVoC&hl=&source=gbs_api
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209
Oct 28, 2014
10/14
by
Laet, Joannes de
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eye 209
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2in-4.
Topic: Geography History (Netherlands) Nederland
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308
Oct 29, 2014
10/14
by
Laet, Joannes de
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eye 308
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Oct 29, 2014
10/14
by
Laet, Joannes de
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eye 336
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2in-4.
Topic: Geography History (Asia)
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Oct 27, 2014
10/14
by
Laet, Joannes de
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eye 171
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24°. 282, [1] p
Topic: Respublica
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Oct 27, 2014
10/14
by
Laet, Joannes de
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24°. 443 p
Topic: Gallia, sive de Francorum regis dominiis et opibus commentarius
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Oct 25, 2014
10/14
by
Laet, Joannes de
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eye 172
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2in-4.
Topic: Geography History (Netherlands) Nederland
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Oct 26, 2014
10/14
by
Laet, Joannes de
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24°. [16], 498, [2] p
Topic: Hispania
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Oct 24, 2014
10/14
by
Laet, Joannes de
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2in-4.
Topics: De principatibvs Italiæ, tractatus. Enlarged, Geography History (Italy)
[From table of contents] Des isles de l'ocean -- Nouuelle France -- Virginie -- Floride -- Nouuelle Espagne -- Nouuelle Galice -- Guatimala -- Terra Firma -- Peru -- Peru ou Charca -- Chile -- Magallanique -- Rio de la Plata -- Brasil -- Brasil Septentrional -- Guaiana -- Nouuelle Andaluzie
Topics: Botany, Zoology, Natural history, Wyandot language, Nahuatl language, Quechua language, Tupi...
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489
Jan 29, 2016
01/16
by
Laet, Joannes de, 1593-1649
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"While Laet...covers much of the same ground as De Boodt, he does add new material and corrects some errors..."--Gemology by J. Sinkankas, entry no. 3747. Also includes a portion of Boodt's Gemmarum et lapidum historia, 1636 (up to chapter 32).
Topics: Mineralogy--Early works to 1800, Precious stones--Early works to 1800
[16], 498, [2] p. ; 11 cm. (24 mo)
Topic: Spain
[4], 116, [8] p. ; 16 cm. (8vo)
Topics: Grotius, Hugo, 1583-1645. Dissertatio altera de origine gentium Americanarum, Indians -- Origin,...
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159
Dec 18, 2018
12/18
by
Laet, Joannes de, 1581-1649
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eye 159
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[32], 544, 31, [11] p., [13] double leaves of plates : 33 cm
Topic: West-Indische Compagnie (Netherlands)
[4], 116, [8] p. ; 16 cm. (8vo)
Topics: Grotius, Hugo, 1583-1645. Dissertatio altera de origine gentium Americanarum, Indians -- Origin
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May 22, 2009
05/09
by
Laet, Joannes de, 1593-1649
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eye 600
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"Livre second. Réimpression."
Topics: Indiens d'Amérique, Indiens d'Amérique, Indians of North America, Indians of North America
[28], 622, [18] p., [28] leaves of plates (14 double) : 33 cm. (fol.)
Topics: Botany -- America, Zoology -- America, Natural history -- America, Wyandot language -- Glossaries,...
Topics: America -- Description and travel, America -- Discovery and exploration, West Indies -- Description...
223, [1] p. ; 17 cm. (8vo)
Topics: Grotius, Hugo, 1583-1645. De origine gentium Americanarum, Indians -- Origin
Half-title: Joannis de Laet Americae utriusque descriptio
520, [8] p. : 11 cm. (24mo)
Topics: Spain -- Colonies -- America, North America -- Civilization, North America -- Description and...
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120
Jul 23, 2016
07/16
by
Laet, Johannes de, 1582-1649
texts
eye 120
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Red.: Johannes de Laet
Topic: bub_upload
Source: http://books.google.com/books?id=EYtAAAAAcAAJ&hl=&source=gbs_api
223, [5], 116, [8] p. ; 16 cm. (8vo)
Topics: Grotius, Hugo, 1583-1645. De origine gentium Americanarum, Grotius, Hugo, 1583-1645. Dissertatio...
223, [1] p. ; 16 cm. (8vo)
Topics: Grotius, Hugo, 1583-1645. De origine gentium Americanarum, Indians -- Origin
[16], 288, 287-430, 441-460, [12] p. ; 12 cm. (24mo)
Topic: Portugal
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1.0
Jun 30, 2018
06/18
by
Kevin De Laet; Lieven Le Bruyn
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The representation scheme ${\tt rep}_n A$ of the 3-dimensional Sklyanin algebra $A$ associated to a plane elliptic curve and n-torsion point contains singularities over the augmentation ideal $\mathfrak{m}$. We investigate the semi-stable representations of the noncommutative blow-up algebra $B=A \oplus \mathfrak{m}t \oplus\mathfrak{m}^2 t^2 \oplus ...$ to obtain a partial resolution of the central singularity ${\tt proj} Z(B) \rightarrow {\tt spec} Z(A)$ such that the remaining singularities...
Topics: High Energy Physics - Theory, Mathematics, Quantum Algebra, Representation Theory, Algebraic...
Source: http://arxiv.org/abs/1405.1158
